The questions - I don't want to use the Airport base station for the
internet connection. I want all connections to the internet to go through
the Linux box for security reasons.
Do I even need the base station since all I want to do is routing for the
wireless connection? The Knowledge Base seems to imply that simple routing
through a software access point (the Quicksilver with an airport card) is
not supported.

Assuming the QuickSilver is running OS 9:

The software access point is basically a cut down version of IPNetRouter. Worst case you could just buy a full copy of IPNetRouter from

<http://www.sustworks.com/>

If it's running OS X it shouldn't be a problem at all, other than some Unix routing jiggery-pokery :)

If that's true then is it possible to just hang the Airport Base Station off
the Quicksilver and have it do routing for the other wireless machines?

You shouldn't need to buy a base station (although they do have the advantage that they rarely crash :)

Have fun,
Shay
--
=========================== Shay Telfer ================================
Perth, Western Australia Technomancer Sponsor WA's Solar Car
Opinions for hire [POQ] Sungroper
[EMAIL PROTECTED] fnord <http://sungroper.asn.au/>